Carding machine



Nov 2, .1937. j A. VQALLAERT 2,097,992

CARDING MACHINE Fil'ed Aug. 16, 1934 Patented Nov. 2, 1937 UNITED STATES PATENT OFFICE Application August 16,

1934, Serial No. 740,181

In France August 17, 1933 2 Claims.

When carding fibrous matters or substances the web is generally removed or detached from the doffer by means of a dofling comb having an alternating or oscillatory movement which beats the fibres out of the doifer. This process has the disadvantage of causing a considerable quantity of dust and fly which is troublesome for the operatives. The comb by its rapid oscillating movement to detach or remove the fibres requires considerable power to operate it and necessitates a fluent lubrication; the comb also requires great care and accuracy in setting. The rapid alternating up-and-down movement of the comb may also be the cause of accidents. The object of the present invention is to remedy the faulty or defective system of the dofling comb which produces dust by its rapid beatings and according to the invention this system is replaced by one in which two rollers are provided to drag or move the web out of or off the dofier. The method according to this invention can be applied to the carding or treatment of all materials, for ex-, ample, cotton, wool, etc. With this invention the web is detached or removed uniformly and without forming dust or fly. The web is also gripped more satisfactorily and it comes out of or leaves the dofier allowing for a better ventilation of the carding room without fear of ripping of the Web. The result is a cleaner carding room. By this process the beginning of parallelism of the fibres can be obtained which is advantageous in the future stages of the spinning and which cannot be obtained by the dofiing comb. Having suppressed the high speed movements of the comb and the comb box, the power required is reduced to a minimum and the need for lubrication is avoided, whilst the risk of accidents that may be produced by the rapid oscillatory movement of the comb and the wear due to the propelling motion is avoided.

In order that the invention may be clearly understood and readily carried into effect, the same will now be more fully described with reference to the accompanying drawing which represents an apparatus for carrying out the method according to this invention. 'In the said draw- Figure 1 represents a general view of a carding machine provided with the device or apparatus according to this invention.

Figure 2 represents a view illustrating in detail the aforesaid detaching or stripping rollers.

The fibrous materials pass into the carding machine by the licker-in roller I and then on to the main cylinder 2 where the fibrous material is carded by a series of flats or the like 3. The material then passes to the dofier 4 which has rigid pointed teeth 4'. The web of material is detached or removed from the dofier by means of two rollers 5 and 6 having smooth coacting surfaces which revolve at the same circumferential speed as the doffer. As shown, roller 5 frictionally engages the rigid teeth 4 so as to be driven by the dofier. The roller 6 is less in diameter than the roller 5 and it rests by its own weight on the roller 5 or is maintained in position by means of a spring. The roller 6 revolves at the same circumferential speed as the roller 5. It will be seen that upon the rotation of the doffer 4, the rollers 5 and 6 are actuated so that these parts move in the directions of the arrows as shown in Figure 2. Due to the rigidity of the teeth 4, the roller 5 is positively driven by reason of its frictional engagement with the teeth, thus dispensing with the use of complicated gearing for actuating the rollers 5 and 6. The web of material on the doffer 4 is dragged by the rollers 5 and 6 and then passes through the usual compressing rollers l and 8. When the carding machine is set in operation, the web of material is primed between the rollers 5 and 6 which detach the web uniformly from the dofier continuously during the operation of the machine without making any dust or fly. Rubbing leathers II and I2 are applied to or bear on the rollers 5 and 6 as shown in Figure 2 and prevent the lapping of the web on these rollers. A blade 9 bears against the roller 5 under the influence of a weight, spring or any other device to avoid or prevent the lapping of the web on the roller 5. A cover I0 is fitted over the dofier 4 so as to cover and protect all the visible parts of the doffer up to the rubbing leathers l2 thus avoiding a risk of accidents.

What I claim and desire to secure by Letters Patent of the United States is:

1. In combination with a carding machine, a rotatable doffer having rigid teeth, a pair of contacting rollers of different diameters, the larger roller bearing against the toothed surface of the doffer so as to be frictionally driven thereby and the smaller roller arranged to rest upon the larger roller so as to be frictionally rotated thereby, the simultaneous rotation of the rollers causing the web to be drawn off from the doffer.

2. In combination with a carding machine, a doffer having rigid teeth, a pair of contacting rollers for drawing off the web from the doifer, one of the rollers bearing against the rigid teeth of the dofier to provide a friction drive for simultaneously rotating the rollers, a shield enclosing said doifer and having a portion extending close to said rollers, a cleaning member connected to the extending portion of the screen and engaging one of the rollers, and a cleaning member engaging the other of said rollers.

ANDRE WALLAERT. 

